i2c/gpio: hook up open session for sf interface

libraries/libstratosphere/source/i2c/server/i2c_server_session_impl.hpp

@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere.hpp>
+
+namespace ams::i2c::server {
+
+    class ManagerImpl;
+
+    class SessionImpl {
+        private:
+            ManagerImpl *parent; /* NOTE: this is an sf::SharedPointer<> in Nintendo's code. */
+            i2c::driver::I2cSession internal_session;
+            bool has_session;
+        public:
+            explicit SessionImpl(ManagerImpl *p) : parent(p), has_session(false) { /* ... */ }
+
+            ~SessionImpl() {
+                if (this->has_session) {
+                    i2c::driver::CloseSession(this->internal_session);
+                }
+            }
+
+            Result OpenSession(DeviceCode device_code) {
+                AMS_ABORT_UNLESS(!this->has_session);
+
+                R_TRY(i2c::driver::OpenSession(std::addressof(this->internal_session), device_code));
+                this->has_session = true;
+                return ResultSuccess();
+            }
+        public:
+            /* Actual commands. */
+            Result SendOld(const ams::sf::InBuffer &in_data, i2c::TransactionOption option) {
+                return i2c::driver::Send(this->internal_session, in_data.GetPointer(), in_data.GetSize(), option);
+            }
+
+            Result ReceiveOld(const ams::sf::OutBuffer &out_data, i2c::TransactionOption option) {
+                return i2c::driver::Receive(out_data.GetPointer(), out_data.GetSize(), this->internal_session, option);
+            }
+
+            Result ExecuteCommandListOld(const ams::sf::OutBuffer &rcv_buf, const ams::sf::InPointerArray<i2c::I2cCommand> &command_list){
+                return i2c::driver::ExecuteCommandList(rcv_buf.GetPointer(), rcv_buf.GetSize(), this->internal_session, command_list.GetPointer(), command_list.GetSize() * sizeof(i2c::I2cCommand));
+            }
+
+            Result Send(const ams::sf::InAutoSelectBuffer &in_data, i2c::TransactionOption option) {
+                return i2c::driver::Send(this->internal_session, in_data.GetPointer(), in_data.GetSize(), option);
+            }
+
+            Result Receive(const ams::sf::OutAutoSelectBuffer &out_data, i2c::TransactionOption option) {
+                return i2c::driver::Receive(out_data.GetPointer(), out_data.GetSize(), this->internal_session, option);
+            }
+
+            Result ExecuteCommandList(const ams::sf::OutAutoSelectBuffer &rcv_buf, const ams::sf::InPointerArray<i2c::I2cCommand> &command_list) {
+                return i2c::driver::ExecuteCommandList(rcv_buf.GetPointer(), rcv_buf.GetSize(), this->internal_session, command_list.GetPointer(), command_list.GetSize() * sizeof(i2c::I2cCommand));
+            }
+
+            Result SetRetryPolicy(s32 max_retry_count, s32 retry_interval_ms) {
+                return i2c::driver::SetRetryPolicy(this->internal_session, max_retry_count, retry_interval_ms);
+            }
+    };
+    static_assert(i2c::sf::IsISession<SessionImpl>);
+
+}